WanderSearch Auckland Charitable Trust manages a tracking program called WanderSearch Auckland, which consists of a simple radio frequency tracking unit and tracking devices.
The tracking unit is manufactured in Waipara, North Canterbury and uses simplex radio frequencies on bands 310 and 311 which are public frequencies.
The tracking unit comprises the Regal 1000 VHF Tracking Receiver, a directional aerial and a roof mount aerial.
The tracking devices come in various designs. Each device works on a radio band and a three digit frequency which is separated by five megahertz. The pulse from the tracking device can be picked up from a high point using the directional or roof mount aerials up to five kilometre away.
The key-ring device is similar to the pendant in shape and colour except it has a small loop at the top which allows it to be attached to house keys, belt loops or pinned to clothing.
The key-ring has an internal aerial which means that the pulse, from a high point will only transmit up to three kilometres away.
The wrist device has an internal aerial which means that the pulse, from a high point, will only transmit up to three kilometres away.